Drag-sawing machine



(No Model.)

D. H. BALL.

DRAG SAWING MACHINE.

Patented Den. 27,1881.

N4 PETERS Pholo-ljlhognphcr, Washington, 110.

UNITED STATES PATENT OFFICE.

DAVID H. BALL, OF RENQVO, PENNSYLVANIA.

DRAG-SAWl NG MACHINE.

SPECIFICATION forming part of Letters Patent No. 251,504, dated December27, 1881.

Application filed May 16, 1881.

To all whom it may concern Be itknown that I, DAVID H. BALL, of Renovo,in the county of Clinton and State of Pennsylvania, have inventedcertain new and useful Improvements in Drag-Saw Mills; and I do herebydeclare that the following is a full, clear, and exact description ofthe invention, which will enable others skilled in the art to which itappertains to make and usethe same, reference beinghad to theaccompanyingdrawings, which form a part of this specification, and inwhich Figure 1 is a perspective view, illustrating the application of myimprovement. Fig. 2 is a detail view of the log-gage ,post with itsdetachable and changeable arms, and Fig. 3 is a detail view of theswinging saw-guide and its supporting-post.

Similar letters of reference indicate corresponding parts in all thefigures.

My invention contemplates certain improvements in devices for guidingdrag-saws across the lumber or log to be cut, and also in gaging thelength of the out; and to this end it consists in the construction andarrangement of parts of a hinged saw-guide,which operates in conjunctionwith a gage-post provided with detachable and changeable gage-arms,substantially as hereinafter more fully described.

In theannexed drawings,Arepresents a vertical post having a cross-beam,B, at its upper end suitably braced by braces b b. At the lower end ofpost A, near the carriage or floor of the saw-mill, are twolaterally-projecting brackets, O and 0, each of which has a verticalbolt or pintle, (shown respectively at c and c.) The body of the postisnotched or recessed in a line with the brackets O and O, as shown atdand d, for the purpose hereinafter set forth.

D represents one of the gage-arms, which are of different length, andhave a bore or hole at the rear end to enable them to be placed uponeither one of the pintles c or c. When in this position the rounded rearend of the arm will project into the notch or recess (1 or d (as thecase may be) in the post, thus preventing downward tilting or sagging ofthe outer end of the arm and holding it at right angles to the verticalpost A, which may be bolted to the roof or beams of the mill by itsupper cross-beam, B.

(No model.)

E is another vertical post, the upper end of which may be braced againstone end or side of crossbeam B, the other end of the post being attachedto the floor. This post has a pin or bolt, f, inserted transverselythrough it, which serves as a fulcrum foraswinging beam or cross-arm, F,the outer end of which forms the saw-guide Gr, which consists of aslot,9, into which the saw-blade is inserted,the guide or slottedguiding-plate heingof such a length as to project down over aconsiderable portion of the saw-blade, and thus prevent bendingortwisting of the saw-blade in starting.

The rear end of the guide-arm or lever F may be weighted, as shown at F,so as to nearly balance the weight of the slotted sawguide G; yet thereshould be a slight preponderance in favor of the latter, to insure itsbeing kept automatically down against the back or ridge of thesaw-blade, and thus always keep it in position.

In the drawings I have lettered the saw S and the log L. The relativepositions of the posts or uprights A and E being'such as indicated, itwill be seen that the log as it is fed forward abuts upon the gage-armD, which stops its further progress while it is being sawed. By usinggage-arms of greater or lesser length the length of the out may,ofcourse, be regulated, thus insuringcutsot' uniform length. At the sametime the brackets O and O (of which there may be two or more) permit theadj ustment of the go ge-arms vertically, according to the heft orthickness of the log.

Having thus described my invention, I claim and desire to secure byLetters Patent of the United States- In a drag-saw mill, the vertical orupright ga ge-post A, and the laterally-proiectin g brackets G 0,provided with pintles c c, to receive detachable and changeablegage-arms D, as set forth.

In testimony that I claim the foregoing as.

my own I have hereunto affixed my signature in presence of twowitnesses.

W. It. OnEsNUr'r, J. D. TINSLEY.

